package com.xxzuibang.day2;

public class Demo3 {
    public static void main(String[] args) {
        char c1='J';
        System.out.println((char)(c1+32));
        char c3='a';
        char c4=(char)(c3-32);
        System.out.println(c4);
        double d1=3.5;
        int i1=100;
        double sum3=d1+i1;
        System.out.println(sum3);
        System.out.println("sum3的整数部分的值："+(int)sum3);
        int i2=1;
        double d3=1740.00;
        double mul4=i2*d3;
        System.out.println("mul4整数部分的值为："+(int)mul4);

    }
}
